• Kilómetro Cero plaque sits in the pavement in front of the main door of the Casa de Correos, the regional government building under the clock
• Bear and strawberry tree statue stands at the start of Calle de Alcalá, the spot locals pick to meet
• Crowded at weekends and in December, since four big shopping streets meet here, so keep small kids close

The busy half-moon square where Spain measures its road distances from. Kids can stand on the Kilómetro Cero plaque set in the pavement, then look up at the clock on the Casa de Correos, whose chimes the whole country eats 12 grapes to at New Year.

Across the square, a bronze bear reaches into a strawberry tree, the city's symbol and its favorite meeting spot.